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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.10 P.758-770

http://doi.org/10.1631/jzus.A1100067


Three-dimensional numerical simulation and earth pressure analysis on double-row piles with consideration of spatial effects


Author(s):  Zi-han Wang, Jian Zhou

Affiliation(s):  Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China

Corresponding email(s):   wangzihan1984@163.com

Key Words:  Double-row piles, Retaining structure, Spatial effect, Finite element, Earth pressure


Zi-han Wang, Jian Zhou. Three-dimensional numerical simulation and earth pressure analysis on double-row piles with consideration of spatial effects[J]. Journal of Zhejiang University Science A, 2011, 12(10): 758-770.

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author="Zi-han Wang, Jian Zhou",
journal="Journal of Zhejiang University Science A",
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pages="758-770",
year="2011",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1100067"
}

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%T Three-dimensional numerical simulation and earth pressure analysis on double-row piles with consideration of spatial effects
%A Zi-han Wang
%A Jian Zhou
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%P 758-770
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%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1100067

TY - JOUR
T1 - Three-dimensional numerical simulation and earth pressure analysis on double-row piles with consideration of spatial effects
A1 - Zi-han Wang
A1 - Jian Zhou
J0 - Journal of Zhejiang University Science A
VL - 12
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SP - 758
EP - 770
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Y1 - 2011
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1100067


Abstract: 
As a new kind of technology in retaining structures, the characteristics of double-row piles are significantly affected by spatial effects. In this paper, double-row piles as a retaining structure are simulated numerically in three-dimension by finite element software PLAXIS 3D FOUNDATION. The behavior differences of piles in different positions around the foundation pit are analyzed. By changing the parameters, including the length-width ratio, the excavation depth, the distance between rows and the diameter of piles, the variations of the lateral deformation, the bending moment and the earth pressure around the piles are determined. The reasonable values of parameters and some suggestions with consideration of earth pressure are proposed for the design of double-row piles as a retaining structure. The results show that the lateral deformation and bending moment are the largest in the middle of long side of the foundation pit, which is identified as the most unfavorable position. It is indicated that the earth pressure between rows above pit bottom is close to active earth pressure, while the earth pressure between rows under pit bottom is close to static earth pressure. It is suggested that 1/2–2/3 of pile length, 0.6–1.2 m, 3d–6d, and 2d–2.5d be chosen as embedded depth of piles, diameter of piles, distance between rows, and distance between piles, respectively, where d is the pile diameter.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1]Brinkgreve, R.B.J., 2002. PLAXIS-Finite Element Code for Soil and Rock Analyses, 2D-Version 8. A.A. Balkema, Rotterdam, the Netherlands.

[2]Chen, C.Y., Martin, G.R., 2002. Soil-structure interaction for landslide stabilizing piles. Computers and Geotechnics, 29(5):363-386.

[3]Ellis, E.A., Springman, S.M., 2001. Modelling of soil-structure interaction for a piled bridge abutment in plane strain FEM analyses. Computers and Geotechnics, 28(2):79-98.

[4]He, Y., Yang, B., Jin, B., Li, R., Tan, Y., Wang, T., 1996. A study on the test and calculation of double-row fender piles. Journal of Building Structures, 17(2):58-66 (in Chinese).

[5]Mendonca, A.V., de Paiva, J.B., 2000. A boundary element method for the static analysis of raft foundations on piles. Engineering Analysis with Boundary Elements, 24(3):237-247.

[6]Neher, H.P., Wehnert, M., Bonnier, P.G., 2001. An Evaluation of Soft Soil Models Based on Trial Embankments. Proceedings of the Tenth International Conference on Computer Methods and Advances in Geomechanics, Tucson, Arizona, USA. A.A. Balkema, Rotterdam, the Netherlands, p.373-378.

[7]Sun, Y., 2008. Research on mechanism and application of the double-row retaining piles for deep pits. Building Science, 24(11):60-65 (in Chinese).

[8]Wu, G., 2006. Theoretical Analysis and Numerical Calculation of Retaining Structure with Double-Row Piles of Deep Foundation Pit. MS Thesis, Beijing Jiaotong University, Beijing, China (in Chinese).

[9]Yang, J., 2005. FEA of Double-Row Piles Considering the Dimension Effects. MS Thesis, Tianjin University, Tianjin, China (in Chinese).

[10]Zheng, G., Li, X., Liu, C., Gao, X., 2004. Analysis of double-row piles in consideration of the pile-soil interaction. Journal of Building Structures, 25(1):99-106 (in Chinese).

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